Volumetric flow rate.
Gallon per Hours to Cubic inch per Hours Converter — gal/h to in3/h
Convert Gallon per Hours (gal/h) to Cubic inch per Hours (in3/h) using the exact conversion factor (1 gallon per hours = 231 cubic inch per hours). See the formula, worked examples, and conversion table.
Gallon per Hours to Cubic inch per Hours converter
Converter
Flow Rate Converter
Convert volumetric flow rates across metric, US, imperial, industrial, and scientific units.
Context values
Some unit families need one extra value for a physically accurate result.
Volumetric flow rate.
Result = input x 1.05150327e-6 / 4.55196222e-9.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Hours to Cubic inch per Hours
Gallon per Hours and Cubic inch per Hours both measure volumetric flow rate — how much volume passes a point over time — used to size pipes and pumps, monitor river or stream discharge, control industrial processes, and set medical infusion rates. Both are volumetric flow rate units.
Formula
cubic inch per hours = gallon per hours × 231
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per hours equals 0.00000105150327333 base units, and 1 cubic inch per hours equals 4.551962e-9 base units, so dividing one by the other gives the direct gallon per hours-to-cubic inch per hours factor of 231.
Simple example
1 gal/h × 231 = 231 in3/h
1 gallon per hours = 231 cubic inch per hours.
Real-world example
60 gal/h × 231 = 13,860 in3/h
60 gallon per hours = 13,860 cubic inch per hours.
Conversion table
| Gallon per Hours (gal/h) | Cubic inch per Hours (in3/h) |
|---|---|
| 0.1 gal/h | 23.1 in3/h |
| 1 gal/h | 231 in3/h |
| 10 gal/h | 2,310 in3/h |
| 60 gal/h | 13,860 in3/h |
| 100 gal/h | 23,100 in3/h |
| 1,000 gal/h | 231,000 in3/h |
Reverse conversion: Cubic inch per Hours to Gallon per Hours
231 in3/h × 0.004329004329 = 1 gal/h
231 cubic inch per hours = 1 gallon per hours.
gallon per hours = cubic inch per hours × 0.004329004329
For a page dedicated to this direction, see Cubic inch per Hours to Gallon per Hours.
Understanding the Gallon per Hours (gal/h)
Volumetric flow rate.
Understanding the Cubic inch per Hours (in3/h)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic inch per hours are in 1 gallon per hours?
1 gallon per hours equals 231 cubic inch per hours, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per hours to cubic inch per hours?
Multiply the gallon per hours value by 231. The converter above does this instantly to whatever precision you set.
How do I convert cubic inch per hours back to gallon per hours?
Use the reverse factor: 1 cubic inch per hours equals 0.0043290043 gallon per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per hours?
Gallon per Hours (gal/h) is a unit of flow rate.
What is a cubic inch per hours?
Cubic inch per Hours (in3/h) is a unit of flow rate.
Is the gallon per hours to cubic inch per hours conversion exact?
Yes. Both gallon per hours and cubic inch per hours are defined by fixed standards rather than physical artifacts, so the factor of 231 used above is exact to as many digits as you choose to display.
What's the difference between volumetric and mass flow rate?
Volumetric flow rate measures the volume of fluid passing a point per unit time (for example, liters per second). Mass flow rate measures the mass instead. For a fluid of constant density the two are directly proportional, but for compressible fluids like gases, mass flow is often the more meaningful quantity.